Electrochemically deposited Pd islands on an organic surface: The presence of Coulomb blockade in STM I(V) curves at room temperature

Osama Shekhah*, C. Busse, A. Bashir, F. Turcu, X. Yin, P. Cyganik, A. Birkner, W. Schuhmann, Ch Wöll

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

Palladium islands with a thickness of a few monolayers were deposited on top of a self-assembled monolayer (SAM) fabricated from 4-mercaptopyridine. In the I(V) curves obtained using the scanning tunneling microscope (STM) clearly the signature of Coulomb blockade is observed, explicitly demonstrating that these islands are coupled to the underlying gold substrate only via a tunneling barrier; this spectroscopic feature also allows to distinguish the palladium islands from similar morphological features present on the gold substrate prior to palladium deposition.

Original languageEnglish (US)
Pages (from-to)3375-3378
Number of pages4
JournalPhysical Chemistry Chemical Physics
Volume8
Issue number29
DOIs
StatePublished - Jul 25 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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